Riders in select cities will get a out-of-this-world treat.

You’re out partying during the long holiday weekend. You’ve had a few too many libations. Who you gonna call? Lyft, if you want to get picked up in a sweet Ghostbusters-spec 1980s Cadillac Superior wagon. No, Slimer won’t be driving your Ecto-1 taxi, but your chauffeur will be costumed like a character from the famous film franchise.

Lyft, in conjunction with Sony, is running the promotion in select cities on Friday, July 1st and Saturday, July 2nd, to help spread the word about the forthcoming Ghostbusters reboot starring Melissa McCarthy, Kristen Wiig, Leslie Jones and Kate McKinnon. If you’re in Boston, New York, Los Angeles, San Francisco, or Washington, just fire up the Lyft app, select "Ghost Mode" and request a free ride. Two lucky riders will also snag two tickets apiece to attend the Los Angeles premiere of the film next weekend.

But every Ecto-1 rider will walk away with a serious sugar rush, thanks to free Hi-C Ecto Coolers—also being rebooted along with the film—and Hostess Twinkies of the Key Lime Slime variety. (Presumably, Kraft Jet-Puffed Marshmallows opted not to participate in this publicity stunt.) While this is still a cool program, it’s a bit of a shame that the original 1959 Cadillac Miller-Meteor ambulance-slash-hearse machine, with those fantastic retro fins, isn’t an option on the ride-sharing app. Still, given how prone Bill Murray is to popping up in random places, perhaps your Ecto-1 will screech up with Peter Venkman behind the wheel. For details on the promotion, check out the Lyft blog.